Monte Paschi CEO Fabrizio Viola

Monte Paschi CEO Fabrizio Viola

Marc Hill/Bloomberg

Fabrizio Viola, chief executive officer of Banca Monte dei Paschi di Siena SpA. Viola and chief financial officer Bernardo Mingrone, who took the helm of the bailed-out lender in 2012, are attempting to revamp the company engulfed in legal probes brought on by the alleged misconduct of former managers.